Originally Posted by Krygg
A few magic damage effects get through on towers, Akali and Diana's passive works. Shen's passive works, and obviously Zigg's works. Not to say it isn't a bug but it happens.
That is something completely unrelated, because those champions' autoattacks add stacks toward their own passive
and enhance the 40% AP-based damage towards towers (including Yi's passive and those with the sheen/lichbane buff), whereas Varus adds stacks on a tower through his W spell. I'm asking specifically if it can somehow add a tiny bit damage to his base autoattack damage.